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Old 02-08-2010, 09:22 PM   #1
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1986 Prowler - condensation issues

I am rebuilding my new, old 86 prowler, riddled with dry rot. I am looking for tips on how to avoid or minimize condensation between insulation and outer tin??? Thanks

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Old 02-09-2010, 09:53 AM   #2
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You may want to ask "our" RV Wizard. I'm sure that he will give you the best information possible as to what the solution would be to resolve that issue for you.

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Old 02-09-2010, 12:49 PM   #3
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The condensation isn't want rotted those walls out, what rotted them out was leaking seams around windows and access doors and your roof.

The only way to completely eliminate it would be to spray in expanding foam between each stud and then cut it flush with the studs, otherwise there'll be air and a chance of condensation forming.

Your next best bet is to go with a dense foam board to use in place of the fiberglass bat that was originally used in the trailers walls (Provided prowler wasn't a step ahead and had go to polystyrene sandwich walls).
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Old 02-09-2010, 01:24 PM   #4
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The condensation isn't want rotted those walls out, what rotted them out was leaking seams around windows and access doors and your roof.
I agree.

However for condensation protection use a vapor barrier on the inside of the wall.
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Old 02-09-2010, 03:43 PM   #5
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Thanks guys. I am a newbie at the total rebuild game. It is frustrating to think that unless you can completly eliminate any air spaces you will have some condensation (leaks notwithstanding) in your walls. Even with vapor barriers your studs and joists will have some contact with the moisture in your glass batt insulation.
Do to poor inspection (pre-purchase) and lack of knowledge, We bought a TT that looked great, ( its only a small wrinkle in the ceiling and wall!!!) The up side is that I have pretty good building skills, and a single minded, persistant do it right attitude. so we are getting close to having a "like new" vintage trailer. I am enjoying the process and learning a lot. Thanks again for all the good advice and tips. D. OZ
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